Boiler cleaner



yJune 2 4, N, L, SNow ET AL 1,766,231

norman chaman v rma .my 2v.' 1925 2 shuts-.sheet 2 A 3% f4 y ATTORNEY:

Patented JuneY 24, v193e v, NonMANLgsNoW Ann ALBERTHW.HGNYWILLQR.; orDETROIT, MICHIGAN, AssIeNoE* To;nmivroivn'j Povvna'SPECIALTY'CORBQRATVIQN', or, nn'rnorr; MioHieAN, Anon; f

crossfsection of a boiler;cleanervr showing my -PoRAg-ION on MICHJIGANApplicata; mea my. 27,

as more fully `hereinafter set forth'. n Y n l Referring to d`rawingsinswhich like reference characters indicateg-corresponding Figure. lanfelevastional view partly'y in and has fork its ,object-theimprovedapparatus i invention:applied-thereto;

Figure 2,isV agviewfjalongf22of Figure-v1 with portion of"valve'voa'sing-broken:

away.; 5f l' Figure jisa'sectional'yiew showing jin Figure l isafragmentary View in section illi'istratingl mynfimproved;.,eonstructionfor,-` k preventing leakage k,around `the valve :stem ;,v

gure 5 'View COlGSPODdlng/to Figure 4 ShQWng aSlightly',modiedfconstrucaonf; and,y

Figure 6 f is fragmentary sectional review showing avalveutfconstruction'adapted to.

element.

Inv the fboiler oleane-ri or7V d blowevar f assembly' shown Ein;lFigures ,-1 l and 25 reference 'charactefrjL lOf indicates thegrotatable*blower element extending througlrtlie boiler walll'l and providedvvifthioneferinoreclean-A get )se-necl';forA supplying, fthezj cleaningfluid such'fas steam or thev like-tothe 'blower ele-L J neck, this valvebeing,:located j'withinfthe valve casing or steampot lat; the lower end.of'y thel goose-neck.; :lheg blowerv1 element is adapted `rtoryberotated by suitable means' in-v Y kcluding` reduction gearing.comprising :inthe:

present instance the'A cha-in'fwheel 16,the"kry jnates in a cone-shapedportion'w which,r4

. pinion 17 4and the gear 181meshngwiththe cassingfl and having itslower edge yengageablev with-.the fvalve stem 22 wliieh extends f upwardlythrough the valve casing. This'lev'er Y. element and s y vBOIL'ERl oLEANEn isactuated ,a suitable cam 23Qwhichlatter ,n v

rotates with the blower element. l

24; is l aj cylindrical 'casing carrying the 24,is threaded athermostatic element ,27;

Lock Inut28isprovidedftoX,the position l`r 'ofthef t'hermojstaticelementinthe end of; the ,Y cylinde'rNor fehaniber 27. Surrounding L.substantially reef sides of Vthis thermostatio`k is arv chamber 9communicating through a regulatingvalve 30 with the cleaning-fluid* lsupply pipe 26- Threaded'in the other end'k igofzthe chamber24 is abushing 31 provided ,"with a passage leading to the interior 4,of

the 'chamber- 24. A :Tftting32'is Vthreaded 1 into; a lateraleXtension'29gof, the I chamber* 29 f and this fittingl is provided ,withthe yT L.pas-r sage 32.. One branch of this T passage'oom-v rmunicatesVVwith the chamber 29, whileg-a secQn/dvbranch of thezsame communicateswith passage 33; -Bus'hing is threaded intoy the ,end of'chamber-f24-and carries an alarm yor .A other indicating Vmeanswsuehasthe whistle l275.`

Passage 3 5 relatively` smaller than .thefpafs-y i d Tv passage32.whereby'rcleaning fluid is ad'r.l

ao'tuatelthe whistle." Therelement`27 termi-5f;`

l,when the element 27 expands, is adapted tojvf Contact with and Closethe passage v33; '37Jisk an openingwhic-h is adapted-to vent thevalve"`.chamber 38 'to the atmosphre. One or more;

openings 39 in the chamber'A are provided -alarm' or whistle 25, fthiscasingco'rnfmuni-- f eating through; pipey or passage `26 VwithV the/opening of the valve for advising the oper-x- "l l.atorl ofy the passageof .cleaning fluidto' the Y. blower element. In one end of the cylinderarated therefrom .by wall ,-281 f' Y d d 'sage isprovided through thebushingflla, i Y. d

and communicates withthe third'branch of l leading from the atmosphere'tothe annular spaceO-around the thermostatic element 27; '150 -ings 39.f l

To facilitate assembly is extended 'downwardly as illustrated' inVFigure 3 of -the'udrawing, so that the bushing 31e-may, during theY'assembling operation, be, '.temporarily positioned below its normalpoV f sition Aasshown inrFigure 3 ofthe drawing.

Thuswith" the bushing 3l threadedgdown-l i wardly tothe position shownin dotted lines Y f in the drawing'and `with''thelbushing-34 ree moved,thelit-ting 32 may be rotated to thread f the-same intorthe extension29. Afterv the i fitting. 32 has been correctly positioned withe inthecylinder 24, the"l bushing 31' maybe v s. threaded 1 'upwardly' untilVAthe;` ,topj of lthe same abuts one end'-oflthe tting`3 2V after Y `whichthe :bushing v'3st i ina-y -be threaded vinto position and into abuttingengagement with'V um @atrendrenaming 32.- v

In operation-the `attendant actuates Vthe V`wheel lrto causev rotationof the blower ele,-V ment l andthe simultanenous unseating ofVthelv'alveflll to supplyV thev cleaning fluid lthrough'the goose-neckl3`to the dischargey nozzles 12.' .A portion fof thecleaning uid rwillflowv 'through-the passage V26 and pass- Y throughlvalve 30 'and intothechamber29 at a Arate.determijned"bythesettingiof the valve 80.'.From.-.chamber 29, thejcleaning jfluid lwillpass throughpassagef32,passage 33 and f 'f thence to the atmosphere throughthe passage YSZffTh'e smallA amountofy cleaning." fluid which would pass throughthepassage 35 to the whistle would notbe at a sumcientpre'svsure tooperate thewhistle. This 'resultis v, accomplished by reasonfofthev'relative sizes of the'p'assages 33. an'df, the former passage#being `ofconsiderably :greater capacity than *the latter; A o Y .y isheated b y-the fluid Vvsrhich substantially sur-l rounds it in thechamber 29, itwill expand and Asfthel therrnostatieV element 27 theconefshape valve 36wil'lseat'onv bush- V ingl", thus closing theopeningtherein to the passage '33, V '.hiszlwi'll shut 'olf .the Yfluid."to Y thex'valveV chamber 43 8 and passage 7 and will cause thevfullvpressure lof. the fluid to pass. through passage tofthe lwhistle 25'soa'sto v,cause the same tojsourid. `v The sound o offthe whistlewillpreferably .continue until `theclea'ningiuid is shutoff the system. The

function'of the openingsBQf'isto allow air B6 into the space 41:0.vr Byadj ustingthevalvel and the closures l1,tlie Whistle may be v,caused tofunction after anyl desired length of time following the actuation oftheV valve! to circulate around the .thermostatic l element .Y B'Y'toprevent undue heating thereof. These openings also serve as a means of.escape for` any fluid 'whicho-might leak'fpastl the Vvalve after a'predetermined interval.

V14V which supplies the cleaningrfluid to" the v i. i blower element; l

By 'reason of the foregoing apparatus thel boiler cleaner may be.operatedf-or a prede-ol termined length of time without sounding ofthe, whistle, Should the operator leave the:

boiler .cleanerwith the cleaning fluid'turned Y.

on', the arrangementfwill automatically sound acting arrangement isalso-useful in advis;

fing the attendant of-.the expirati'onfof'a-predetermined period ofvoperati-on of boiler Y The" delay cleaner, thus eiiiciently operatingthe same. Y,

closed means forv preventing leakage around thevalve'stem. Attached tothe vvalve'stem 22ais a valve vdisc 42 held inplac'e'by a 'nut 43@Thisfrvalve adapted to seatwon the i Y valveseat 44 las Vwillbereadil'yunderstood.A o I e5' A recessed bushing 45de threadedinto theReferring to Figures l and 5', we have'dis ,p

upper wall 46 of thervalve chamber orsteam v W pot l5. A Ysuitableopening is provided;in-V Vthe bushing 45 permitting movementrrofithe .v,valvestem22a. l? is a: plate inountedina notch 48 .locatedV adjacentthefouterjendgof Y Vthe 'valve'st'emf `Filvledlyattached tofthis plateVandt'o'th'e bottom ofthe recessed bush#V -inox is a flexible element491m the nature; of.y abellows or sylphon; The flexible bellows 749 willreadily' contract and expand with the movement of the valvestemmaintaining at all times a fluid tight j-ointbetween theivalve may acton fan extension of the plate 4:7 for Y stem andv valve chamber.' .Aspring l50 may 1i Vbe, mounted exteriorilyof .theelement i9 and f' Ynormally holding the valve closed'.r Smalle l,openings '5I may beprovided 'in the bottom.

of the lbushing4:5 for preventing'the forma? tionof avacuum which mightrender the operationV of the va-lvel stem( difficult.

AInthemodifiedconstruction shown in FigureLthe arrangementl'of parts issubstan-v Y tiallyzthe sameas Yshown in Figure Lf In this lfigure,however, the' plate 47a is `adapted ito'be held inthe notch d8aA of thevalveI stemY y 1122* by reason' of a'nut152:` AlsojinjthisconeV 1.1 'YQstructi'on, ani additionalbearing 53,l is.l

vided for guiding the valvestem'22".V Y' Referring *Y to r Figurey '6 we.have shownV a .e boilerV cleaner Vconstructed to admit cleaning.;-vfluid successively in 4increasing amounts or e in stages to the blowerhead.' For. accoiiiff 'f o plishing this result we'haveprovidedkafvalve': 'y i formed ofa plurality of elements which are: -jaodaptedvtofunction in stages asaforesaid.V it VInthis figure the steampotrorva'lv'e casing, j orl-chamber l5 is ,providedfwith' a valves'eatAlfprovided with the opening V55V affording Q passageof cleaning-.Huidv56 YaA 'seat mem'` through the seat 54 for engagement withfthe seatmemberj'Gf These bolts are relatively-*2s fixed to the seat member56 byreason of the 1 nuts 60. The seat member y56 is also formed i l with anopeningv 57 andan yoffset Vportion 58 l providing a sliding bearing forthe valve stem 22C. The Aportion 58 is also provided with a plurality ofopenings lfwhich communivcate with Athe opening 57 for conductingcleaning fluid therefrom. 1 The seat member 56 is adapted to perform thedouble function of a valve and valve seat since it regulates the jpassage of cleaning iiuid through the opening 55 and also forms a seatfor a valve l62 which is secured to the lower end 4of the valve stem 22.63 is a projection carried by the-valve stem for engagement with theportion 58 for moving the member 56 as described heref inafter.

In operation when the valve stem 22c is depressed by the trigger 19 thevalve 62 is unseated from the member 56 thereby causingfcleaning fluidtopass through the openings 57 and 61 to the steam pot l5. As the valvestem is so-depressed through the action of trigger 19, the projection 63of the valve stem comes into contact withthe portion 58 of the seatmember 56 causing the latter member in turn, to be unseated vfrom theseat 54 thereby providing additional opening VYfor 4the passage ofcleaning fluidfrom the i supply line into the steampot. During themovement of .the seat 56 away from the seat 54, thesprings 57 arecompressed. Asthe valve stem rises during the valve closing periodthesprings 57 firstreturn the member 56 to its seat 54 and as ksoon as theprojection 63 passes beyond the pointof contact with the portion 58 thevalve62 is drawn to its seat to closethe opening 57 by reason ofthespring 64.' By'varyirg the relative proportions of the valves andcleaning fluid passages, or

openings, any desired ratio of cleaning fluid'.y

flow during the two stages of the valve opening may be obtained. It isalso obvious that the time intervals of the twosta'ges may bear'jny'desired relation.

ing. the actuation of the valve for advising the operator of the passageofcleaningflui'd to said nozzle, and means forregulatlng the said timeinterval.

2. In a boiler cleaner, ablower element pro-V vided with a nozzleadapted toedis'vc'harge cleaning fluid, means for supplying a` cleaningfluid to said nozzle, a'valve controlling the supply of cleaning fluid,means for actun ating said valve, an alarm, and means auto# maticallyresponsive to the passage of cleaning fluid a predetermined length oftime. folto the said nozzle.y

lowing. the:actuationV ofisaidfvalv'e for-.SmildeV ing-saidy alarm, andmeans preventing sound-3' ing oftliealarm during'thessaid time. intervalf following theactuation ofthe' valvel, fj. 1. .f 3. j fInv'a boiler@cleaner, a "blowerffelement provided with a nozzle f adapted totdischarge cleaning fluid, means for@ supplying: a clean-y ingl fluid. tosaid'v nozzle, avalve controlling the supply of cleaning fluid, meansforactu-V ating said! valve, analarm, :andi means a'i'ito`maticallyresponsive to `.the passage of.' cleaning fluid a predetermined.length of time fol; lowing the actuation 'of said valvefor soundingsaid alarm, .means preventing sounding of the alarmduring'the-saidftime. interval following the` actuation "ofi the@ valve, vand f meansregulably controlling the said'time interval.

4. In a boiler cleaner, a blower element pro-y videdl with a nozzleadapted to discharge cleaning fluid, means for supplying a cleaningfluid to said nozzle, a valve controlling the supply of cleaning fluid,means for actu-` ating said valve, a whistle, and means automaticallyresponsive to the passage of clean# ing fluid a predetermined lengthoftimefoL lowing the actuation of said valve for supply-l Y the same,and means preventing sounding of the whistle prior to the expirationv'of' said time interval.

5. In a boiler cleaner, a provided'with a nozzle adapted to dischargecleaning fluid, means for supplying a clean-k ing uid to said nozzle, avalve controlling ing cleaning fluid to said whistle for actuatingvblower 'element the supply of cleaning Huid, means for ac-` tuatingsaid'valve, a whistle, means automatically responsive to the passage ofcleaning fluid a predetermined length of time following the actuation ofsaid valve for supplying cleaning fluid to said whistle `for actuatingthe same, means preventing sounding of the whistle prior to theexpiration of said time interval, and meansregulably controlling thesaid time interval.

6. In a boiler cleaner, a blower element provided withy a nozzle adaptedto discharge cleaning fluid, means for supplying a cleaning fluid tosaid nozzle, a valve controlling the supply of cleaning fluid, means foractu-` ating said valve, and means automaticallyv actuated apredetermined length'of time fol- Y i lowing the actuation ofthe valvefor advising the operator of the passage of cleaning Huid 7 r'Ihecombination with a blowerelement, and means for supplying a cleaningfluid to said element, of an alarm, and means operable to effect anactuation of said alarm after ythe Y cleaning fluid has .been suppliedtof said elementtfor a predetermined period of time.

8. The combination with a blower element, and means for supplying acleaning fluid toV said element, of an alarm, and means operable toeffect an actuation of saidv alarm after the 13.0.1.' i

i4 Y Y Y K 1,766,231"

A f cleaning Huid has been supplied to said ele-- Y Vment for a,predetermined period of time, said` meansV including a. valve and meansfor fauto- Y niet-,icallyactuating the said valve.V Y n 5 Q 9.The-.combination with ablOWer element, i f' andmeans for supplying'acleaning fluid to saidvelementf, of ana1arm,iand means oper-V i abletoeffect anactuaton Aofsaid alarm after the `cleaning Huid has beensupplied. to'V said lo element for a' predetermined period of time, saidmeansinoluding Aa, valve and a-,thermostat for. actuating the saidvalve. l :[n estilnon7 whereof We aXY our .signe-V tures; 'f v Vffw 1.NORMAN L. SNOW.y

'.VALBEMv W HONYWILL, JR.

